/Engine/Plugins/Runtime/MassEntity/Source/MassEntity/Public/MassEntityManager.h
Builds an entity for it to be ready to be used by the subsystem
void BuildEntity ( [FMassEntityHandle](API\Plugins\MassEntity\FMassEntityHandle) Entity, TConstArrayView< [FInstancedStruct](API\Plugins\StructUtils\FInstancedStruct) > FragmentInstanceList, const [FMassArchetypeSharedFragmentValues](API\Plugins\MassEntity\FMassArchetypeSharedFragmentValu-) & SharedFragmentValues )